Usually this MFD gets a lot of attention from macro photographers. For macro lenses, the MFD can reach 16 cm. So, don't be surprised if a macro lens can photograph objects from a very close distance, and still be able to focus.

Focal length

MPEG Layer II (MP2) Compressed Audio File is an audio file format used when streaming MPEG audios. MP2 is a lossy format that is a predecessor of the MP3. The MP3 file format needs a lower bit rate to attain the same quality of the MP2 files. It is widely used thanks to its high error resilience and sound better at high bit rates (256 Kbps and above).

Apple iTunes, Microsoft Windows Player, Apple QuickTime Player, VLC media player, MPlayer, and KMPlayer programs can open the MP2 files.

Minimum focusdistance

The file sizes are reduced by compressing them using MPEG Audio layer 2. Over the years, the MP3 format has gained more popularity than MP2. Many portable audio players are compatible with MP2. However, more players are now designed to play MP3 files making it easier to convert MP2 to MP3 for easy compatibility.

MP2 was developed by (MPEG) Moving Picture Expert Group in a move to standardize coding of both audio and video files for use on Digital Radios and TV Broadcasting. It aims at reducing the size of the file while retaining the quality of the sound. MP2 is a great competitor to the Dolby Digital (the industry standard for DVD- video).

In the image above, the MFD is 0.25 m (25 cm), meaning the minimum distance from the camera sensor to the object to keep it sharp is 25 cm, if it is less than 25 cm then the photo will be blurry.

Does anyone know what the minimum focusing distance is? Yep! All types of lenses have an MFD, which is the minimum focusing distance from the camera sensor to the photo object. If it is closer than that distance, the object will become blurry. Usually MFD is expressed in length such as 0.5m.